Fix CONFIRM button not responding to click or Enter by replacing disabled attribute with CSS class

game.js

@@ -501,7 +501,7 @@ class Game {
      BATTLE CURSOR — navigate 2×2 grid with D-pad / WASD
      ══════════════════════════════════════════════════════════ */
   _moveCursor(dir) {
-    const btns = document.querySelectorAll('.choice-btn:not(.disabled):not(.correct):not(.wrong)');
+    const btns = document.querySelectorAll('.choice-btn:not(.disabled):not(.correct):not(.wrong):not(.confirm-inactive)');
     if (!btns.length) return;
     const total = btns.length;
     let c = this.state.cursor;
@@ -524,7 +524,7 @@ class Game {
 
   _confirmCursor() {
     if (this.state.answering) return;
-    const btns = document.querySelectorAll('.choice-btn:not(.disabled):not(.correct):not(.wrong)');
+    const btns = document.querySelectorAll('.choice-btn:not(.disabled):not(.correct):not(.wrong):not(.confirm-inactive)');
     const target = btns[this.state.cursor];
     if (target) target.click();
   }
@@ -1131,7 +1131,7 @@ class Game {
             btn.classList.add('selected');
             selectedSlots.add(slotIdx);
           }
-          confirmBtn.disabled = selectedSlots.size !== 2;
+          confirmBtn.classList.toggle('confirm-inactive', selectedSlots.size !== 2);
         });
       } else {
         btn.addEventListener('click',()=>this.pick(slotIdx, correctShuffledIdx, q, container));
@@ -1141,9 +1141,8 @@ class Game {
 
     if (isMulti) {
       const confirmBtn = document.createElement('button');
-      confirmBtn.className='choice-btn confirm-btn';
+      confirmBtn.className='choice-btn confirm-btn confirm-inactive';
       confirmBtn.textContent='✔ CONFIRM';
-      confirmBtn.disabled = true;
       confirmBtn.addEventListener('click', () => {
         if (this.state.answering || selectedSlots.size !== 2) return;
         this.pickMulti(selectedSlots, correctShuffledSet, q, container);

style.css

@@ -588,7 +588,8 @@ html, body {
 .choice-btn:active  { transform:translate(2px,2px); box-shadow:none; }
 
 /* D-pad / keyboard cursor highlight */
-.choice-btn.cursor  { animation:choiceCursor .7s ease-in-out infinite; border-color:var(--yellow) !important; background:#fffae0 !important; }
+.choice-btn.cursor:not(.confirm-btn)  { animation:choiceCursor .7s ease-in-out infinite; border-color:var(--yellow) !important; background:#fffae0 !important; }
+.choice-btn.confirm-btn.cursor { border-color:var(--yellow) !important; box-shadow:0 0 0 3px var(--yellow); }
 .choice-btn.correct { background:#c8ffc8; border-color:var(--green); animation:correctPulse .5s ease 3; pointer-events:none; }
 .choice-btn.wrong   { background:#ffc8c8; border-color:var(--red);   animation:wrongShake .35s ease;   pointer-events:none; }
 .choice-btn.disabled{ opacity:.5; pointer-events:none; }
@@ -596,7 +597,7 @@ html, body {
 .choice-btn.selected::after { content:' ✔'; color:var(--blue); font-size:1.6em; vertical-align:middle; }
 .choice-btn.confirm-btn { background:var(--blue); color:#fff; border-color:#003080; text-align:center; grid-column: 1 / -1; }
 .choice-btn.confirm-btn:hover:not(:disabled) { background:#0050d0; }
-.choice-btn.confirm-btn:disabled { opacity:.4; pointer-events:none; }
+.choice-btn.confirm-inactive { opacity:.4; pointer-events:none; }
 .choice-btn.confirm-btn::before { content:''; }
 
 .battle-footer { background:var(--dark-bg); border-top:3px solid var(--black); padding:clamp(4px,1.2vw,6px) 12px max(4px,var(--safe-bottom)); display:flex; justify-content:space-between; align-items:center; font-size:clamp(5.5px,1.5vw,7px); color:var(--yellow); flex-shrink:0; }